One of the following is not correctly matched. Which is it?
a. The olfactory epithelium lies in a mucous membrane powering the inferior nasal conchae.
b. Hairs in the nasal vestibule help remove large particles from the air.
c. Conchae and their meatuses increase surface area and help moisten entering air.
d. Mucus in the nasal cavity helps moisten air and removes smaller dust particles.
e. Most of the air inhaled does not directly enter the paranasal sinuses.